Paper machinery



Jan. 8,1935.

H. L. KUTTER PAFER MACHINERY Filed Jan. 25, 1932 2 Sheets-Sheet 1 Jan.8, 1935. L, KUTTER 1,986,977

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' C C) C) @Q @0 o@ @C C@ Q@ @C C@ @O O@ @C @C C() C) C) C@ @@@QQQ C@ @CQ Q@ 00C@ QQ@ 000C@ Q Q @Q Q c) 0 C@ SQ C@ (D C) C) C) 56 PJS? Q 3 QPatented Jan. 8, 1935 PAPER MACHINERY Herman-L. Kutter, Hamilton, Ohio,assignor to The Black-Clawson Company, Hamilton, Ohio, a, corporation ofOhio Application January 25, 1932, Serial No. 588,584

2 Claims.

This invention relates to paper making machinery, and more particularlyto paper driers and the like.

One object of the invention is the provision of a paper drier apparatusof the vertical dried type, embodying stacks or drier rolls the variousrolls being s'o arranged as to provide an effective and uniform heatingand supporting action on the paper web as the latter passes throughthemachine in a desired path.

Another object of the invention is the provision of a paper drierapparatus embodying drier roll stacks some of which are arranged at asubstantially higher level than others so as to. provide spaces or areasin the contines of the drier, these areas or spaces so provided beingsuitable as locations for machinery or providing space for brokeremoval.

Another object of the invention is the provision of a. paper drier ofthe vertical drier type, embodying spaced roll stacks, a plurality oftransfer rolls being provided for transferring the paper in a serpentinemanner from an end roll of one stack to an end roll of an adjacent stackin order that the temperature of the paper may be maintained as ittravels over a comparatively large gap existing between adjacent stacksto reduce the .likelihood of breakage and prevent cockling of the paperthat might otherwise be caused by absorption of condensed vaporespecially at the edges of a comparatively thin sheet.

Other objects and advantages of the invention will be apparent from thefollowing description, the attached drawings and the appended claims.

In the drawings:-

Fig. 1 shows a partly diagrammatic elevational view of a paper drierapparatus embodying the present invention;

Fig. 2 shows a modified arrangement so designed as to provide machinelocations in the connes of the drier apparatus; and

Fig. 3 is a diagramatic arrangement of the drier rolls of Fig. 2.

Referring to the drawings by reference numerals, and rst with respect toFig. 1, the invention has been shown in the form of a paper drierapparatus of the vertical drier type, embodying paper drier units 10, 11and 12 through which the paper web passes as it is carried from thefourdrinier or other web forming machine, to the calenders or otherpaper handling idevices'. The paper web, as it passes through thedriers, is conducted around drier rolls, power driven in any suitablemanner from a drive pinion 13 or the like,'and heated'internally bysteam or the like to a high enough temperature so that the water contentof the web will be driven off.

.The unit 10 embodies a double stack 14\ of drier rolls supported insuperposed staggered relationship so as to provide a serpentine path forthe moist paper web 15. The stack 14, comprising the heated drier rolls14a to 14f `incmsive, is prog vided on the frame side or standard 16. Asecond frame side 17 carries a second series or stack 18, the rolls ofthe stack 18 comprising rolls 18a, 18h, and 18o arranged one verticallyabove the other onthe inner side of the frame side 17; and alsocomprising rolls 19a, 19o, and 19e, on the outer side thereof. As shown,the rolls 18h and 18o are staggered with respect to the rolls 19a and19h to provide quite short spaces between these rolls.

The unit 11 comprises a series of vertically arranged rolls 20a, 20h and20c carried on the frame member 21 which also supports a second Vseriesof rolls 22a, 22h and 22o. The opposite frame side 24 carries the rolls25a, 25h and 25o and the additional `rolls 26a, 26h and 26e. Thearrangement of the rolls on the unit 12 is similar to the arrangement ofthe units 10 and 11.- This unit 12, and as many additional units may beemployed as desired.

In order that the moist paper web may be effectively supported andtransferred from the end roll of some stack to the adjacent end roll ofa second stack, in a manner that has been more fully set forth in mycopendng application (Docket 1036), filed on even date herewith, SerialNo. 588,583, a heated transfer roll 29 may be provided between the lowerroll 14a of the stack 14 and the roll 18a, as shown in the drawings. Aheated transfer roll 30 may also be provided between the rolls 19e and20c, the two top rolls of the adjacent stacks of the two units 10- and11. In this way the temperature of the moist paper web is maintained asthe latter is carried across the intervening space between one stack anda succeeding stack of a unit, and between the end roll of one unit and asucceeding unit, and uneven drying due to absorption of water,especially at the edges of a thin sheet, is effectively taken care of.However, in the form of construction illustrated in Fig. 1, theunsupported length of paper web between the rolls 14a and 18a, orbetween the rolls 19e and 20 may not be large, and the transfer rolls 29and 30 need not be used.

It will'be noted that the rolls 19a, 19h and 19e, which are. provided onthe outer side of the machine frame, are only on the upper portions of`the frame. 'I'he adjacent units are rather close -I together, and theresult of arrangement of the various drier rolls and of the drierunltsis# the provision of a space 32 between the framesoftheunits10and11andaspace33betweenthe frames of the units 11 and 12.These spaces afford a means of access to the paper rolls and serve asbroke receiving chambers or areas.

VOpenings 34 are preferably provided in the iloor ing of the paper. Forexample, as'shown in Fig. 2, smoothing rolls 36 and 37 are located inthe spaces'38 and 39, these smoothing rolls being adapted forcooperation with the paper web as it passes from one drier stack toanother in the course of the drying operation. V-

The particular arrangement of the drier rolls of Fig. 2 is illustratedon a larger scale in Fig. 3. As therein shown, the drier unit 40comprises a series of rolls 42 to 45 inclusive along side o! whichis asecond series of rolls 46 to 48 inclusive, these various rollsconstituting 'a vertical double stack of drier rolls, the rolls beingarranged in superposed staggered relationshipso as to ail'ord aserpentine path for the paper web 50. The unit 40 also comprises asecond double series or stack, embodying tlie rolls 52 to 59 inclusive.

The unit 41 is constructed in the same manner as the unit 40, andembodies two double series or stacks designated generally 62 and 63,series 62havingabottomroll64andatoproll65while jserles63hasabottomroll66andatopr'oll6'1.

The paper web is carried from the upper roll 45o! the 'rst stack of unit40 down around the transfer roll 70 up over another roll 'I1 and downover another transfer roll '12. before it reaches the upper side of 'thetop roll 59 of the second stack. The rolls "l and 'l2 are preferablyheated,

AVand theroll'l which maybe lust like the drier rolls of the rollstacks. is also heated by steam or the like. The two rolls 45 and 59 maybe arranged a considerablev distance apart and as the paper web travelsacross the space intervening 'between the two rolls, it is supported andits temperature is maintained by its engagement with the threetransfer-rolls just mentioned,

` which support the paper web in a serpentine path and function in amanner calculated to eil'ectively4 transfer and support the paper weband prevent cockling tendencies that might otherwise be caused byabsorption of condensed water vapor.

' At the lower ends of the adjacent drier units 40 and 41, the paper webis carried or transferred from one unit to the next by means of theheated drier or transfer rolls '14, 'I5 and '16. Roll 15 corresponds inconstruction to the rolls of the drier stacks while rolls 'I4 and 'I6are preferably smaller in diameter. All of these transfer rolls arepreferably heated. The web passes vover or along the upper side of therolls rI4 and '76 and is carried in contact. with the lower side of thecentral roll 75. In this way the comparatively large space existingbetween the rolls 52 and 54 is effeetively bridged, and thel temperatureof the paper is maintainedr so that condensation is prevented and unevenabsorption `of the' water,

especially at the edges of a thin paper web is avoided. The spaces maybe as wide as desired since the double series of stacks may be spacedapart any desired distance merely by suitable design ofthe transferrolls which conduct and carry the paper from one stack to the next. Thespaces existing between adjacent drier stacks at their lower ends may beemployed as locations for smoothing rolls or the like, as previouslymentioned, and they may be as high as desired although the space abovethem is effectively utilid by the drier rolls.

While the forms of apparatus herein described constitute preferredembodiments of the invention, it is to be understood that the inventionis not limited to ,these precise forms of apparatus, and that changesmay be made therein without departing from the scope of the inventionwhich is deilned in the appended claims.

1 What-is claimed isz' 1. In a paper drier apparatus of the characterdescribed, a plurality of vertical drier lmit frames arranged in series,adjacent units having adiacent roll stacks overhanging the imit framesand arranged to provide spaces of a height equal to several rolldiameters below -the overhanging rolls between adjacent units.

2. In a paper drying apparatus ofthe character-described, incombination, a i'ioor, a plurality of n'vertical drier unit framesarranged in series on the floor, adjacent units havingadjacent rollstacks overhnsing the unit frames and arranged to provide spaces of aheight equal to several roll diameters below the over-hanging rollsbetween adjacent units, the floor having openings beadjacent units forthe disposal of broke

